Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
  • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
  • F16L1/06—Accessories therefor, e.g. anchors
  • F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground

Definitions

• the invention relates to a conduit, in particular for gas and water, which is coated on the surface.
• Pipe pipes of this type are mostly installed in walls under plaster or also in floors, depending on the intended use they are used for hot water pipes, fresh water pipes or gas pipes.
• the colored longitudinal strips (usually three strips are arranged offset by 90 °) have the task of making alignment easier when laying the conduit.
• the invention is therefore based on the object of eliminating these deficiencies and of creating a conduit of the type described at the outset which, with simple manufacture, enables good location even after a long installation period.
• the invention achieves the stated object in that it may cover only part of the pipe surface extending coating contains electrophysically locatable components or consists of such.
• the coating can be applied by sticking on strips, by sintering, painting and the like. It is only essential, however, that the coating contains constituents that can be located electrophysically, or consist of them at all, in order to enable detectors to respond when they are located.
• the coating which extends only over part of the pipe surface, is in the form of longitudinal strips which may be broken down into dots or lines, because then the alignment during assembly is facilitated as before and, moreover, the entire pipe run is determined during the location can.
• a simple production process for the line pipes according to the invention results if the coating is applied in a manner known per se in the extrusion process.
• the components that can be located electrophysically, together with the plastic powder or granulate, can then be fed in the coextruder to the strand emerging from the main extruder, where, owing to their mixing with the simultaneously supplied plastic, they fuse with the material of the strand passing through the coextruder.
• metals, metal oxides and / or metal salts are embedded in the coating, barium tritanate being suitable as metals, aluminum, zinc, iron or brass, as metal oxides, iron oxide, chromium oxide or copper oxide and finally as the metal salt .
• the coating can also consist of or contain electrophysically conductive plastic.
• locatable components of the coating can be magnetized, sensitive detectors can be used for location on a magnetic field, and an even more reliable location results.
• the electrophysically locatable coating can have a protective layer, in most cases this protective layer only needs to be a thin skin.

Applications Claiming Priority (2)

Publications (1)

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Citations (3)

• 1993
  • 1993-02-22 EP EP93890022A patent/EP0570353A1/fr not_active Withdrawn

Patent Citations (3)

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